Dough mixing and conditioning machine



Nov. 29, 1927.

4 F. X. LAUTERBUR ET AL DOUGH MIXING AND CONDITIONING MACHINE File J n- 1927 4 Sheets-Sheet l lllllllllllllll |l||| m m w mm M Nb w N.

A TTORNEY Nov. 29, 1927. 1,651,092

F. X. LAUTERBUR ET AL DOUGH MIXING AND CONDITIONING MACHINE Filed Ja .7, 1927 4 Sheets-Sha e: 2

INVENTORS g MW MW ATTORNEYS Nov. 29, 1927. 1,651,092

F, X. LAUTERBUR ET AL DOUGH MIXING AND CONDITIONING MACHINE Filed Jan. '7, 1927 4 Sheets-Sheet 3 ATTORNEYS Nov. '29, 1927.

-F. X. LAUTERBUR ET AL DOUGH MIXING AND CONDITIONING MACHINE Filed Jan. '7 1927 4 Sheets-Sheet 4 INVENTORS A TTORNEYC:

Patented Nov. 29, 1 927.

U N 1 TE D S T ATE S ATQEN T OFF 1 C E FRANK X. LAUTERBUR'AND'ZEDWARD .J'ULAUTEBBUB, LOI'N SIDNEY, OHIO. I

DOUGH .MIXINGTAND CONDITIOIQTING. MACHINE.

Application filed. January 7, 1927,; Seria1.No...159,682.

Our invention relates todough mixing ma chines, and particularly to improvementsin retarding and stretching devices in dough agitators.

It is the object of our invention to provide stretching and retarding rollers for a dough mixer having a horizontally rotatable agitator which rollers have a co-operative rela-.

tionship with the ingredients, and to so arrange the rollers that adjustment of .the' position-of one roller may control the position of another.

In our co-pending' application Serial No.

151,802, filed November 30, 1926, we have de- 1 scribed a novel process for mixing-dough. In accordance w1th this process we have found a desirable arrangement of devices to In mixing dough we have found that although for a given batch of dough the de-- Figure 10 is an end view showing the sirable position for a roller in the upperpart of the bowl, and of a roller in the lower part of the bowl, may usually be accurately determined, for various different mixes and combinations the predetermined positions for the rollers are not always satisfactoiy' Further I have found that it is often.desirable to change the .position of the upper and lower rollers during the mixing process.

The purpose of rollers above the axis of rotation is to break the projection ofadough mass against a bowl wall, to retard its,cen-' trifugal throw and to guide it downwardly.

rollers or bars within the bowl retard. and

after described, the gluten in a dough mix may be properly developed without over heating the mix and the operation may be* mixers adapted to co-operate ,with the mixer 1 1nvent1on:-

."er retarding unit.

The purpose of the rollers below the axis of rotation is for retarding and stretching the, .dough mass. Itis desirable to have the 9 carried. outin a shorty time with a comparativelyhighrate of speed of the agitator.

In the drawings in which we have illustrated several. preferred embodiments of our Figure 1 isa plan'view of a mixer equipped with-one upper and one lower roller. Figure 2 is" a section along the lines 2-2 in Figure 1.

Figure 2 is. adetail of the adjustment bracket.

"Figure 3 is a front elevationxof one of the roller supports shown in Figure 1. I

' Figure 4. is aside elevation of the roller support .shownjin- Figure 3.

uFigure' 5 is a section of a different type of emixer having. a different arrangement of a three bar or rollagitator. bars, andhaving --Figure 6115 an end elevation with-portions iofthebowlgwall cut. away, to show the inner a bowlr structure.

igure 7 is an end view of the arrange- .ment shown in Figure 5, with the arm 19 in locked engagement;

. Figure 8 -is a sectional view of the arrangement: shown in Figure 9.

Figure 9 is an end elevation with parts cut away showing the same typeof agitator shown in Figures-5-8 with the adjustment difi'erently arranged.

parts in adifierentfadjusted position,. and

showing a different construction which permits the use of either fixed bars or rotatable sleeves-"with the spider armsupports. Referring :first to Figures/1 1, we have generally indicated at 1 the mixing bowl,

.in this instance a U-shaped tank. A shaft 2 is. suitably journaled .in and-extends through partof my invention, is provided for rotating the shaft. The agitator, bars are preferably carried around in. a counter-clockwise yd1rect1onas'shown 1n Figure 2 for mixing the ;dough.

Pivotally mountedabout the shaft 2 and extending diagonally upward in each of the ends of the bowl are the upper'roller sup- 7 ports 5. The supports have'bosses 6, and extending; across between the bosses 6 the roller 7 is preferably rotatably mounted. Extending downwardly and also preferably ivotally mounted about the shaft 2 are the ower roller supports 8 having bosses 9 and a roller 10 extending across between the bosses. The lower roller is shown with a sleeve 11 rotatably mounted thereon. Be-

tween the end edges of the supports 5 and 8 trolled. I have found it preferable, however, to provide an adjustable connection which may be provided by having studs or set screws 13 connecting the bar 12 to the supports 5 and 9, and providing a series of threaded holes 14 in the end edges of the supports inclined at such angles as 'Wlll properly seat the stud bolts in order to give diflerent angles of adjustment between the supports 5 and 9. A bracket 16 having a countersunk roove is attached to each support 5, an a slidable nut 17 is mounted in the .countersunk groove. Wing bolts 18 extend through the bowl wall and are threaded within the nuts 17. By loosening The spiders carry three rollers or bars 20,

the win bolts exteriorly of the bowl wall the brac ets will thus slide to a desired position at which the wing bolts may be tightened and the supports thus fixed in a desired position. I

In the modifications in Figures 5-10 which show more practical assemblies from a manufacturing point of view we have shown the same ty of U-shaped bowl 1, with a shaft 2 carrying spiders 3. The spiders. 3 have curved bars or rollers 4 which are shown in the preferred arrangement which is described in our co-pending application Serial No. 131,478 of August 25, 1926. The retarding roller or bar supports are in these modifications provided by spiders 5 which have a set of four arms 19 which may be used for supporting the dough retarding elements.

the arm without a bar being provided for controlling theunit adjustment for controlling the position of. the spider assembly. The adjustment elements in these modifications are shown as cap screws 21 which extend through the bowl wall and which may fit into threaded or countersunk holes in the spider arms 19 which we have so indicated to distinguish them fromthe arms 19 which carry the retarding rollers exce t in Figure 5. The cap screw will hol the spider, however, merely by frictional engagement which avoids the necessity of matching holes. It will be noted that the bowl wall has an arrangement of threaded holes with cap screwstherein in an arcuate formation extending through an arc of approximately ninety degrees This COIlr enables the positioning of the rollers in tically every conceivable position. In F1gure 5 we have shown the lock stud secured in the arm 19 at the top of the arcuate arrangement. In Figure 6 we have shown the same arrangement of retarding bars as is shown in Figure 6, but it should be noted that the spider arms have removably mounted circular bearing blocks 22 which will allow the bars 20 to be removed and sleeves 22 to be inserted over them. 'In this type of structure it is advisable to mount the circular bearing blocks in opposition to the throw of material to be agitated. Thus in the arrangement shown in Figure 10 the direction of rotation of the agitator is indicated by the arrow and is from the end shown, counterclockwise. 1 Thus the throw of dough will tend to keep the retarding bars in fixed position without exerting a is loosened and the retarding bars moved to 1 a predetermined position. The plain ca screw 21 in the desired hole is then remove and the master cap screw inserted to hold the spider. The plain cap screw is then inserted in the hole formerly occupied by the master cap screw.

While we have shown constructions which will lend themselves to many mechanical adaptations, as far as we are aware, noone has previously provided retarding rollers or bars with a co-operative connection between them, so that the position of one may be determined with relation to another. We claim the same broadly therefore. It will also be within the scope of our invention to have the rollers in different numbered series. As long as the unitary adjustment plan is used, it is thought that such modifications will come within the scope of our invention. I

Having thus'described our invention what we claim as new and desire to secure by Letters Patent is 1. In a dough mixerliaving a horizontally the centrifugal throw of a dough mass against side walls of the bowl, and a member extending substantially in alignment .the bottom wall-s of the bowl, and means for mounting said members, said means having a co-operative adjustability.

2. In a dough mixer having a horizontally rotatable agitator on a shaft, and a bowl within which said agitator is. mounted, a member extending substantially in alignment with said agitator shaft for deflecting the centrifugal throw of a dough .mass

against side walls of the bowl and a member extending substantially in alignment with said agitator shaft for deflecting the downward throw of a dough mass against the bottom walls of the bowl, and means for mounting said members, said means having a co-operative adjustability, said means for mounting said members comprising axial supports for said members.

3. In a dough mixer having a horizontally rotatable agitator on'a shaft, and a bowl within which said agitator is mounted, a

member extending substantially in alignment with said agitator shaft for deflecting the centrifugal throw of a dough mass against side walls of the bowl, and a member extending substantially in alignment with said agitator shaft for deflecting the downward throw of a dough mass against the bottom walls of the bowl, and means for mounting said members, said means having a co-operative adjustability, said means for mounting said members comprising axial supports for said members, and said co-operative adjustable means extending to the outside of the bowl, whereby adjustment of said members may be made exteriorly of the bowl.

4. In a dough mixer having a horizontally rotatable agitator, a shaft on which said 7 agitator is mounted, and a bowl through which said agitator shaft extends, at least one dough deflecting element extending across the bowl above said agitator shaft, at least one deflecting element extending across the bowl below said agitator shaft, and interconnecting means between said elements.

5; In a dough mixer having a horizontally rotatable agitator, a shaft on which said agitator is mounted, and a bowl through which said agitator shaft extends, at least one dough deflecting element extending across the bowl above said agitator shaft,

and at least one dough deflecting element one dough deflecting element extending across the bowl above said agitator shaft, and, at least one dou h deflecting element extending across the bowl below said agitator shaft, and interconnecting means between said elements, said elements having adjustable mounting means adjustable exteriorly of the bowl. p

7. In a dough mixer having an agitator 'with a horizontal axis of rotation, means for deflecting dough above the axis of rotation, and means for deflecting dough below said axis of rotation, and a unitary mounting for said deflecting means. I

8; In a dough mixer having an agitator witha horizontal axis of rotation, means for deflecting dough above the axis of rotation, and means for deflecting dough below said axis of rotation, and a unitary mounting for said deflecting means, said unitary mounting means adjustable for supporting nonrotatable and rotatable deflecting means.

9. In a dough mixer, an agitator, a bowl within which said agitator is adapted to rotate,-means for retarding the centrifugal throw of a dough mass against side walls of the bowl, and means for retarding the downward throw of a dough mass, and means for adjusting the relative position of said retarding means with relation to said axis of rotation.

10. In a dough mixer, an agitator, a bowl within which said agitator is adapted to rotate, and said agitator having a horizontal axis of rotation, a plurality of deflecting means disposed about the axis of rotation within the bowl for retarding the throw of a dough mass against walls of the bowl, and means for varying the position of said doflecting means simultaneously.

. 12. In a dough mixer, an agitator, a bowl within which said agitator is adapted to rotate, and said agitator having a horizontal axis of rotation, aplurality of deflecting means disposed about the axis of rotation within the bowl for retarding the throw of a'dough mass against walls of the bowl, and means for varying the. osition of said deflect-ing means from witout the bowl.

13. In a dough mixer, an agitator, a bowl within which said agitator 1s adapted to rotate, and said agitator having a horizontal axis of rotation, a plurality of deflecting 'means disposed about the axis of rotation within the bowl for retarding the throw of a dough mam against walls of the bowl,

11. In a dough mixer, an-agitator, a bowl and meansfor varying, the position of said defleotin means, andvmeans for supporting sald de. eoting means coaxially with said axis of rotation.

14. In a dough mixer, an agitator, a bowl.

within the bowl for retarding the throw of a dough mass against walls ofthe bowl,.and v i means for varyingthe position ofsaid deflecting means, and means for supportmg'smd deflecting. means coaxia-lly with said axls of.

rotation, said means fonsupporting said: defleeting means coaxially with said axis ofrotation provided with removable supportsfor said deflecting means..

FRANKM-XL DAUTERBUR. 'EDWARD' J. LAUTERBUR. 

